Panasonic Viera color bleed

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  • Tom41
    Badcaps Veteran
    • Oct 2005
    • 336
    • England

    #1

    Panasonic Viera color bleed

    I have a new Panasonic Viera large-screen TV I use for gaming, and have noticed a problem with the colors on it. Sometimes the colors seem to 'bleed' into adjacent areas, and it seems random whether or not it will occur on a specific part of a picture. Occasionally it looks like the color is not fitting the picture properly. E.g. if there is a gray circle on a brown background, I will see an additional gray circle to the left or right of the proper one. I have tried turning off all image enhancement and filter settings to no avail.

    A different TV connected to the same source does NOT exhibit this color bleeding issue, even using the same cables!

    The problem only seems to occur when the TV is connected to the game console via composite, and when the input signal is PAL 60hz. It does not occur through component cables, or when running in 50hz mode.

    The attached pairs of images show pictures from The Legend of Zelda Ocarina of Time running in 60hz mode through composite. One picture is from the Viera TV showing the bleed, and the other is from a Samsung Syncmaster which does not show any bleed.
    Look between the carrots on the first pair to see it, and on the second pair notice how the blue of the minimap is bleeding into an area where it should not be blue.
    Attached Files
    You know there's something wrong when you open your PC and it has vented Rubycons...
  • Krankshaft
    Badcaps Legend
    • Jan 2007
    • 2328
    • USA

    #2
    Re: Panasonic Viera color bleed

    It has to do with down sampling don't use composite cables they're at the bottom of the analog food chain. When you mash the red, green, and blue, greyscale, and sync into one cable there is a HUGE loss of color information.

    This is why we don't use them or RF cables anymore on a modern HD set they cause a blurry picture and horrible color reproduction. Low def CRTs are more forgiving and the loss is less pronounced.

    Composite is an inferior video transfer method only slightly better than an RF modulator. S-video improves the picture quality slightly but I'd still recommend component.
    Last edited by Krankshaft; 07-11-2011, 02:09 PM.
    Elements of the past and the future combining to make something not quite as good as either.

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